You know, Al, I had/have the same thought... In fact when I was originally planning on doing my garage, my plans were (construction now on hold) to put a floor safe in. But my goal was a little different. I wanted a data vault. I wanted to put a hard drive and power in there (conduits would go to it, of course). I broached the subject to a safe dealer and he told me flat out that it wouldn't work. He said there is no fire protection at all and the thing would get hot instantly... I'm still a little baffled by that. Yes, the door is definitely pure metal and hence conductive, but it is also below grade. Heat rises Even lthough radiated (infrared) head is extreme, I would still have guessed that the idea would work well. When you add in the fact that I live 3 minutes from a fire station (OK, 5 by the time they put on their boots, etc), the fire wouldn't even be that extreme, I don't think, I would have guessed that I would be fine.